On that day I also talked to her about who artists used the "camera lucinda" to assist in their drawings and paintings. The book in the image, Secret Knowledge, by David Hockney, gives an in depth explanation and has scores of examples of paintings by the masters who (he proves) used this technique.
When I got home that evening I ordered the book and had it sent to Amanda.
Amanda created this montage from her own photos and honored my by posting it on facebook.
That's a Cooke S4; I'm guessing 50mm. The go for a little over $7 grand.
If you can find the book in the public library I encourage you to have a read -- it's fascinating, and I think he proves his premise about the camera lucinda (and camera obscura). Have a look at this page, for instance: